Example tutorial on modifying hostname in Centos system

1. Use the command to temporarily modify

hostname oier

In this way, the hostname of the server will become oier, but it will change back after restarting

2. Edit the configuration The file is permanently modified

vi /etc/sysconfig/network

HOSTNAME=oier

It will not take effect until restarting

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Host analysis modification

Since the Host file will parse the Hostname to the local by default, if you need to do this, you need to modify the Host file at the same time

vi /etc/hosts

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